S
M
T
W
T
F
S
30
84°
69°
31
88°
72°
1
89°
70°
2
88°
66°
3
82°
64°
4
85°
63°
5
84°
63°
6
79°
62°
7
81°
61°
8
81°
60°
9
82°
57°
10
79°
59°
11
75°
53°
12
76°
54°
13
76°
53°
14
78°
57°
15
81°
58°
16
80°
59°
17
80°
59°
18
81°
60°
19
81°
59°
20
77°
59°
21
79°
58°
22
80°
57°
23
79°
58°
24
80°
56°
25
75°
54°
26
71°
50°
27
71°
50°
28
75°
52°
29
76°
54°
30
77°
54°
1
76°
53°
2
75°
54°
3
76°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Orange
Orange's September 2026 forecast shows daily high temperatures ranging from 71° to 89°, with overnight lows between 50° and 72°. The average high for September is 79° with an average low of 58°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Orange. See also: October | November | December.